So now I own a 3bd, 1.5bath single family brick ranch in a nice little neighborhood.We pulled back carpet to expose and refinish the hardwood that was underneath, completely updated the kitchen, added a new vanity and light fixture and resurfaced the main bathroom.

Underneath the home was a whole different story.

The house is a short 2 story and based on preliminary measurements, we should be able to squeeze underneath the power lines.  

But we have sandy soil , clay starts at about 12 feet .  

The environmental guy said due to its proximity to a large oak tree and the sandy soil he would advise leaving it only doing a clean out and seal so the tree wouldn’t have a chance to fall on the house.

Most people think of 3/4 crushed aggregate as if they don't need to apply some sort of "compaction" (aka density on non-cohesive soils)".  

If I understand what I've read, I would need to first get my agent's license and then have to basically work underneath a broker. 

Make sure you budget for time, consultations, removal, root raking, in-fill, soil testing, compaction testing, and tree replacement costs. 

I paid the approximate $3500 for the soil borings and testing, but it paid off with no oil found.

You just need to make sure the barrier underneath has enough padding to help absorb the noise.